*Takuro Nakamura¹, Fumio Yamasawa¹, Youichiro Nihira¹, Osamu Hatakeyama¹ (1. Civil Engineering Research Institute for Cold Region)

*Fumio Yamasawa¹, Takuro Nakamura¹, Osamu Hatakeyama¹ (1. Civil Engineering Research Institute for Cold Region)

*Bunya Chea¹, Taweep Chaisomphob², Takashi Matsumoto¹ (1. Hokkaido University, 2. Thammasat University)

*Shuto Nakazawa¹, Yuko Mathuo¹ (1. National Institute of Technology, Tomakomai College)

*Hiroki Hasegawa¹, Takanori Kadota¹, Takehiko Saito¹, Yasunori Miyamori² (1. Kitami Institute of Technology, 2. Hokkaido University)

*Meiyo Yoshida¹, Yasunori Miyamori², Takehiko Saito³, Takanori Kadota³ (1. Kitami Institute of Technology, 2. Hokkaido University, 3. Kitami Institute of Technology)

*Kota Ueno¹, Sunao Iwabuchi², Tomohisa Takehara², Yoichi Hinata³, Yasunori Miyamori⁴, Takanori Kadota¹, Takehiko Saito¹, Toshiyuki Oshima¹ (1. Kitami Institute of Technology, 2. Koken Engineering, 3. Nihon Kasetsu, 4. Hokkaido University)

*Takashi Sato¹, Takahiro Terasawa¹, Osamu Hatakeyama¹ (1. Civil Engineering Research Institute for Cold Region, PWRI)